Questions

There are many reasons why a constitution is needed. One of the primary purposes is to define and limit power of the government.

It gives the structures for the functioning of the country such as courts and parliament and limits the power.

e.g. to imprison without trial for the government.

The technology giant Apple has been named as the most innovative company of 2016, as per Boston Consulting Group (BCG) 2016 analysis. In the list of world’s 50 most innovative companies, Google has been ranked second, followed by Tesla Motors, Microsoft, Amazon, Netflix, Samsung, Toyota, Facebook and IBM. 

The words do, does and did often cause confusion in the English language. They are all forms of the verb to do.

It is also common to use do, does and did as auxiliary verbs (or helping verbs) together with another verb in its base form. This is used to create negative sentences, questions, or for adding emphasis.

Examples :: 

* Russel did a great job on his debut match for team.

* Did you catch the train this morning?

* When did they arrive home?

Any object rolls when there is no friction. So, Sliding to Rolling is correct.